Spi CMS150902003 Micrometer Calibration Standard 50mm

Product Description

The SPI CMS150902003 is a spherical-end micrometer calibration standard designed to verify and maintain the accuracy of outside micrometers used in precision measurement applications. With a maximum length of 50 mm and a calibrated accuracy of 0.0012 mm, this standard provides a reliable reference point for technicians who need to confirm micrometer performance before critical measurements. The included heat insulating handle minimizes thermal expansion from hand contact, preserving measurement integrity during use. This is a purpose-built metrology tool intended for quality control environments, machine shops, and any setting where traceable micrometer calibration is required.

This calibration standard is suited for use in manufacturing, toolroom, and inspection environments where outside micrometers must be verified against a known reference. It is appropriate for both initial calibration setup and routine field checks. The heat insulating handle makes it practical for bench use without temperature stabilization delays. Calibration technicians, quality assurance inspectors, and machinist-level tradespeople working with precision measurement equipment are the primary users of this standard.

Key Features

• Calibrated to an accuracy of 0.0012 mm for traceable reference use
• 50 mm maximum length covers a common micrometer verification range
• Spherical end geometry ensures consistent contact with micrometer anvil and spindle
• Includes heat insulating handle to reduce thermal error during handling
• Pre-calibrated from the factory — ready for immediate use upon receipt

Compatibility

Designed for use with outside micrometers as a calibration and verification reference standard.

Installation Notes

This calibration standard does not require installation in the traditional sense but should be handled using the included heat insulating handle at all times to prevent thermal growth from affecting measurement results. Allow the standard to reach ambient shop temperature before use if it has been stored in a significantly warmer or cooler environment. Store the standard in its case when not in use to protect the contact surfaces from nicks or corrosion that could affect calibration validity. Calibration should be performed by a qualified metrology technician or quality assurance professional in accordance with applicable measurement standards.